Digital Map Data:
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Monday, 20 May 2013: dawn to dusk
Printable view Forecast issued: 0351 on Monday, 20 May 2013
A cool and damp start with low cloud and outbreaks of drizzle. Turning brighter but isolated thundery showers developing this afternoon.
|Heavy snow||No Risk|
|Storm force winds||No Risk|
|Severe chill effect||No Risk|
|Persistent and extensive hill fog||High||Persistent hill fog this morning will make navigation difficult.|
|Thunderstorms||Medium||Risk of showers turning thundery as this afternoon progresses.|
|Heavy persistent rain||No Risk|
|Strong Sunlight||Low||Low risk of sunburn this afternoon as sunny spells develop.|
|Dawn to 0900||0900 to 1200||1200 to 1500||1500 to dusk|
Low cloud will bring persistent and extensive hill fog at first, along with outbreaks of light rain and drizzle. This afternoon cloud will gradually thin and break to allow some very warm sunny spells to develop. However, isolated showers are also expected to develop, with a medium risk of these turning heavy and thundery later this afternoon and into this evening. The showers will be slow moving, and may also produce large amounts of hail, making it slippery under foot.
Poor or moderate at first but locally very poor in hill fog. This morning generally improving to good, then locally decreasing moderate or poor with showers later.
Persistent, overcast hill fog likely this morning above around 150-250m, although summits may be cloud free. Breaking and lifting during the morning to leave ragged amounts above 500m later.
Northerly 15 to 20mph
|Valleys||Plus 9 increasing to 20 Celsius|
|600 m||Plus 10 Celsius|
|Freezing level||Well above the summits.|
A rather cloudy start with some light outbreaks of rain and drizzle at first. Although it is expected to remain rather cloudy for much of the day some brighter spells are possible during the afternoon, which in turn could set off an isolated heavy shower.
Moderate or poor at first, very poor in hill fog. Improving to mainly good into the afternoon.
Occasionally broken to overcast above 200-300m breaking and lifting during the morning.
North to northwest 15-20mph
|Valleys||Plus 8 increasing to 16 Celsius|
|600 m||Plus 10 Celsius|
|Freezing level||Well above the summits|
A day of sunny spells and scattered afternoon and evening showers. Temperatures are expected to be close to average for the time of year with a strengthening north or northwesterly breeze, with a risk of gales developing over the highest ground by sunset. Freezing level above the summits.
Bright or sunny intervals and scattered showers, which may become heavy and possibly persistent across eastern parts while western areas are more likely to be dry, and also brighter. Brisk northerly accentuating an unusually cold feel for the time of year, risk of gales over the highest ground, especially late in the day. Freezing level only a little above the summits.
Cloudy with outbreaks of rain throughout, the rain perhaps heavy and persistent across eastern areas at first . Feeling cold, despite the north or northeast wind gradually decreasing through the day. Hill fog is likely across eastern areas for much of the day.
Altitude 511 metres
Rainfall measured at 03:00 Monday, 20 May 2013
Rainfall data provided by the Environment Agency. The Met Office is not responsible for content provided by third parties and may remove this data without warning.
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